Destruction-type wireless signal blocking device and method based on code domain channel

Abstract

The present invention provides a destruction-type wireless signal blocking device and method based on a code domain channel. The device comprises a low-noise power amplifier, a down converter, an analog-to-digital converter, an FPGA, a digital analog converter, an up converter, a power amplifier, a clock module providing clock signals and a control mainboard configured for parameter configuration and state monitoring. The lower-noise power amplifier is connected with the down converter; the down converter is connected with the analog-to-digital converter; the analog-to-digital converter and the digital analog converter are connected with the FPGA; the up converter is connected with the digital analog converter; and the power amplifier is connected with the up converter. The present invention further provides the blocking method corresponding to the blocking device. The destruction-type wireless signal blocking device and method based on the code domain channel are characterized in that: the space original signals are subjected to code domain interference to allow mobile phone users not to perform normal communication with a base station, and the signals of a user mobile communication device can be effectively shielded so as to prevent somebodies from performing unlawful activities through mobile communication so as to ensure the information safety.

Description

technical field [0001] The present invention relates to a communication device, in particular to a wireless signal blocking device and method based on code domain channel destruction. Background technique [0002] With the rapid development of mobile communication technology, mobile communication-related products and services have penetrated into every corner of society. While mobile communication technology brings great convenience to people's life, it also makes it possible for a small number of people to use mobile communication technology to engage in illegal activities such as cheating in exams and leaking state secrets. Therefore, it is necessary to deploy signal jammers in some important places such as government agencies, armed police stations, prisons, schools, etc., to shield the signals of mobile communication devices such as user equipment, so as to prevent people from using mobile communication technology to engage in illegal activities . [0003] When the pri...

AI Technical Summary

Problems solved by technology

However, because the existing interference shielding method does not contain any code channel information related to the terminal itself, most of the interference power will be filtered out during despreading, resulting in unsatisfactory interference effects and a relatively small interference shielding range. A certain interference effect can only be obtained by outputting a large power (generally about 23dB greater than the power of the downlink signal), which will not only waste energy, but also cause adverse effects on the human body and the surrounding environment

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